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authorNishanth Devarajan <ndev2021@gmail.com>2018-07-23 19:37:41 +0530
committerDavid S. Miller <davem@davemloft.net>2018-07-24 14:44:00 -0700
commitaea5f654e6b78a0c976f7a25950155932c77a53f (patch)
treed67053f9a2ec1a7a8a379e7480626be85a7e4cf2 /net/sched/Makefile
parentnet: phy: add GBit master / slave error detection (diff)
downloadlinux-dev-aea5f654e6b78a0c976f7a25950155932c77a53f.tar.xz
linux-dev-aea5f654e6b78a0c976f7a25950155932c77a53f.zip
net/sched: add skbprio scheduler
Skbprio (SKB Priority Queue) is a queueing discipline that prioritizes packets according to their skb->priority field. Under congestion, already-enqueued lower priority packets will be dropped to make space available for higher priority packets. Skbprio was conceived as a solution for denial-of-service defenses that need to route packets with different priorities as a means to overcome DoS attacks. v5 *Do not reference qdisc_dev(sch)->tx_queue_len for setting limit. Instead set default sch->limit to 64. v4 *Drop Documentation/networking/sch_skbprio.txt doc file to move it to tc man page for Skbprio, in iproute2. v3 *Drop max_limit parameter in struct skbprio_sched_data and instead use sch->limit. *Reference qdisc_dev(sch)->tx_queue_len only once, during initialisation for qdisc (previously being referenced every time qdisc changes). *Move qdisc's detailed description from in-code to Documentation/networking. *When qdisc is saturated, enqueue incoming packet first before dequeueing lowest priority packet in queue - improves usage of call stack registers. *Introduce and use overlimit stat to keep track of number of dropped packets. v2 *Use skb->priority field rather than DS field. Rename queueing discipline as SKB Priority Queue (previously Gatekeeper Priority Queue). *Queueing discipline is made classful to expose Skbprio's internal priority queues. Signed-off-by: Nishanth Devarajan <ndev2021@gmail.com> Reviewed-by: Sachin Paryani <sachin.paryani@gmail.com> Reviewed-by: Cody Doucette <doucette@bu.edu> Reviewed-by: Michel Machado <michel@digirati.com.br> Acked-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/Makefile')
-rw-r--r--net/sched/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sched/Makefile b/net/sched/Makefile
index 910ec7463a36..f0403f49edcb 100644
--- a/net/sched/Makefile
+++ b/net/sched/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_NET_SCH_NETEM) += sch_netem.o
obj-$(CONFIG_NET_SCH_DRR) += sch_drr.o
obj-$(CONFIG_NET_SCH_PLUG) += sch_plug.o
obj-$(CONFIG_NET_SCH_MQPRIO) += sch_mqprio.o
+obj-$(CONFIG_NET_SCH_SKBPRIO) += sch_skbprio.o
obj-$(CONFIG_NET_SCH_CHOKE) += sch_choke.o
obj-$(CONFIG_NET_SCH_QFQ) += sch_qfq.o
obj-$(CONFIG_NET_SCH_CODEL) += sch_codel.o